Appearing in 'Vitisphere' newsletter this morning:
Alsace wants to test 16 new grape varieties: chenin, malbec, syrah, vermentino...
As of this autumn, Alsace will initiate the VIFA procedure (varieties of interest for adaptation purposes) with the National Institute of Origin and Quality (Inao). The Association of Winegrowers of Alsace (Ava) created its VIFA commission at the end of 2022. This selected ten white grape varieties (chenin, floréal, johanniter, petit manseng, opalor, petit courbu, selenor, souvignier gris, vermentino and voltis) and six reds (calabrese/nero d'avola, colliris, malbec/côt, nebbiolo, sirano and syrah) in selecting them on their resistance to diseases, their time of maturity, their ease of management, the acid structure of the wines (but not according to the emblematic appearance of certain varieties in wine-growing areas, which could have consequences: see box).
For grape varieties resistant to mildew and powdery mildew, “many winegrowers are struggling to manage rows of vines close to homes. In these situations, they quickly need the solution for experimenting with resistant grape varieties that will allow them to respect the Non-Treatment Zones (ZNT) and produce without losing the appellation” explains Christian Kohser, in charge of the VIFA file at Ava . “This response comes in support of the Alsavine program which aims to select new varieties with polygenic resistances to Riesling and Gewurztraminer typicity. We can also re-study the behavior of clones deemed too acidic and/or too late in the past.” adds Yvan Engel, president of the Ava technical commission. The acquisition of references in the different types of soil is planned over a period of ten years. In the room, Pierre Gassmann, independent winegrower in Rorschwihr, regretted that the old Alsatian grape varieties like the knipperlé were not considered worthy of being part of the varieties selected. “We had to act quickly” explained Christian Kohser…
The meeting also approved the filing of a dossier for an innovation evaluation device (DEI) concerning the management of weeds on the cavaillon using permeable biodegradable mulch. A ten-year follow-up is planned. The profession is finally working on the constitution, probably in 2024, of a network of plots whose water profile will be monitored over ten years in order to specify the methods of (possible) irrigation of the vines.
Water, precisely, remains a crucial element to realize the great potential of the 2023 vintage on the 15,529 hectares of the Alsatian vineyard. The forecast relates to 991,00 hl against 849,00 hl actually produced in 2022. But to reach this level, it would still take a good thirty millimeters in August, according to several winegrowers present in Colmar. As for the yields authorized in the Alsace appellation, the vineyard generally remains on values between 55 (gewurztraminer), 65, 70 and 75 hl/ha depending on the grape variety. The crémant grapes increase to 80 hl/ha. These different levels are matched with a VCI of 10 hl/ha. The CRINAO meeting on August 22 will decide on the opening dates for the harvest.
